# Index - System Components #index #system-component Overview of fire and gas detection system components and architecture. ## Core Components ### Control Systems - [[F&G Control Systems]] - Central processing and control units ### Detection Elements - [[Catalytic Bead Sensor]] - Flammable gas sensors - [[IR Absorption]] - Infrared gas sensors - [[Electrochemical Sensor]] - Toxic gas sensors - [[Flame Detection]] - Fire detection sensors - [[Open Path Detection]] - Area monitoring systems ### System Design - [[Gas Detector Placement]] - Detector positioning strategies - [[Alarm Thresholds]] - Alarm level configuration ## System Architecture F&G systems typically consist of: 1. **Detectors** - Sensors that detect fire or gas 2. **Control Panels** - Process signals and make decisions 3. **Alarm Devices** - Visual and audible alarms 4. **Outputs** - Emergency shutdown, fire suppression activation 5. **Communication** - Integration with other systems ## Integration F&G systems integrate with: - Emergency Shutdown (ESD) systems - Fire Suppression Systems - Process Control Systems - Building Management Systems ## Communication Protocols - Modbus - Profibus - Ethernet - HART ## Standards Compliance - [[IEC 61508]] - Functional safety - [[IEC 61511]] - Process industry safety - [[Safety Integrity Level (SIL)]] - SIL 2 minimum recommended ## Related Concepts - [[Hazardous Area Classification]] - Equipment requirements - [[Gas Detection Calibration]] - Maintenance procedures